/Engine/Source/Editor/UnrealEd/Public/Kismet2/BlueprintEditorUtils.h
Finds the first compiler-relevant (i.e. non-ignorable) node from the given pin and returns the owned pin that's linked.
The given pin if its owning node is compiler-relevant, or the first pin linked to the owning node at the matching "pass-through" pin that is owned by a compiler-relevant node. May be NULL if no compiler-relevant nodes can be found from the given pin.
static [UEdGraphPin](API\Runtime\Engine\EdGraph\UEdGraphPin) * FindFirstCompilerRelevantLinkedPin ( [UEdGraphPin](API\Runtime\Engine\EdGraph\UEdGraphPin) * FromPin )